HelloMayby someone can help me I have buy a P2 4gb from AliexpressPhone come athome and it was android 7 but i buy it with 6 okeNo i have no or bad calling signal and no rear camera function when i start the camera appStart the camera app and i goes directly to the front camera no function for rear camera

Aliexpress and the seller say to me No problem you have a warranty but nobody can help me I have now for 3 weeks live chat session with aliexpress but still no warranty and service from the seller